Residents in low-lying areas of Palmetto Bay and Cutler Bay could face tidal flooding beginning Saturday, Oct. 24, as South Florida enters a period of exceptionally high tides.

Miami-Dade County identified Oct. 24-30 as the period with the highest predicted tides of the year in an advisory issued Oct. 13.

The county listed three periods when coastal flooding is most likely:

  • Oct. 24-30: The highest predicted tides of 2026.
  • Nov. 6-9: Another period of elevated tides.
  • Nov. 23-26: A third period of potential tidal flooding.

The forecasts are based on the South Florida Water Management District's Enhanced Tidal Forecast, developed in partnership with the University of Miami.

Low-lying neighborhoods face greatest risk

King tides are exceptionally high astronomical tides that occur when the gravitational effects of the sun and moon combine to produce higher-than-normal water levels.

In South Florida, seasonal ocean conditions, winds and rising sea levels can increase their effects.

The highest tides can push water onto streets, into parking areas and across low-lying properties, particularly near Biscayne Bay, canals and other connected waterways.

Flooding may worsen when high tides coincide with heavy rainfall, strong winds or elevated surf.

Miami-Dade County warned that sea level rise is increasing the frequency and extent of tidal flooding, allowing water to reach areas that historically remained dry during high tides.

Although the county identified Oct. 24-30 as the period with the highest predicted tides, actual flooding will depend on local weather and drainage conditions.

County urges residents to avoid floodwater

Miami-Dade County recommended several precautions ahead of the expected high tides:

  • Avoid walking through floodwater, which may contain sewage, chemicals or other contaminants. Wash exposed skin, clothing and pets after contact.
  • Do not drive through flooded streets. Use alternate routes.
  • Move vehicles to higher ground before flooding begins.
  • Rinse vehicles with fresh water if they come into contact with salt water.
  • Check tide predictions before boating because unusually high water levels can reduce clearance beneath bridges.

Residents can use the NOAA Sea Level Rise Viewer to identify areas potentially vulnerable to coastal flooding.

The tool's Flood Frequency feature highlights locations that may experience recurring high-tide flooding under selected conditions. It does not predict exactly which streets will flood during a specific tide event.

The next forecast king tide period begins Oct. 24, with additional elevated tides expected in November.